답안 #781094

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
781094	2023-07-12T17:37:05 Z	uped	Mobile (BOI12_mobile)	C++14	100 / 100	367 ms	35300 KB

mobile

#include<bits/stdc++.h>

using namespace std;

using ll = long long;

void fastio() {
    ios_base::sync_with_stdio(false);
    cin.tie(nullptr);
}

int main() {
    fastio();
    int n, len;
    cin >> n >> len;
    vector<pair<ll, ll>> v(n);
    for (int i = 0; i < n; ++i) {
        int a, b;
        cin >> a >> b;
        v[i] = {a, b};
    }
    double l = 0.0, r = 1.5e9;
    while (r - l > 1e-3) {
        double radius = (l + r) / 2.0;
        double cur = 0;
        for (int j = 0; j < n; ++j) {
            ll x = v[j].first;
            ll y = v[j].second;
            double a = sqrt( radius * radius - y * y);
            if (x - a <= cur) cur = max(x + a, cur);
        }
        if (cur >= len) {
            r = radius;
        } else {
            l = radius;
        }
    }
    cout << fixed << setprecision(4) << l;
    return 0;
}

Subtask #1
4.0 / 4.0

#	결과	메모리	Grader output
1	Correct	212 KB	Output is correct
2	Correct	212 KB	Output is correct
3	Correct	212 KB	Output is correct
4	Correct	212 KB	Output is correct

Subtask #2
4.0 / 4.0

#	결과	메모리	Grader output
1	Correct	212 KB	Output is correct
2	Correct	212 KB	Output is correct
3	Correct	212 KB	Output is correct
4	Correct	212 KB	Output is correct

Subtask #3
4.0 / 4.0

#	결과	실행 시간	메모리	Grader output
1	Correct	1 ms	340 KB	Output is correct
2	Correct	2 ms	340 KB	Output is correct
3	Correct	1 ms	340 KB	Output is correct
4	Correct	1 ms	340 KB	Output is correct

Subtask #4
4.0 / 4.0

#	결과	실행 시간	메모리	Grader output
1	Correct	2 ms	340 KB	Output is correct
2	Correct	2 ms	340 KB	Output is correct
3	Correct	2 ms	340 KB	Output is correct
4	Correct	2 ms	340 KB	Output is correct

Subtask #5
4.0 / 4.0

#	결과	실행 시간	메모리	Grader output
1	Correct	3 ms	340 KB	Output is correct
2	Correct	2 ms	340 KB	Output is correct
3	Correct	2 ms	340 KB	Output is correct
4	Correct	2 ms	340 KB	Output is correct

Subtask #6
5.0 / 5.0

#	결과	실행 시간	메모리	Grader output
1	Correct	2 ms	340 KB	Output is correct
2	Correct	2 ms	340 KB	Output is correct
3	Correct	1 ms	340 KB	Output is correct
4	Correct	2 ms	340 KB	Output is correct
5	Correct	2 ms	440 KB	Output is correct

Subtask #7
5.0 / 5.0

#	결과	실행 시간	메모리	Grader output
1	Correct	26 ms	1492 KB	Output is correct
2	Correct	21 ms	1492 KB	Output is correct
3	Correct	13 ms	1664 KB	Output is correct
4	Correct	25 ms	2644 KB	Output is correct
5	Correct	13 ms	1480 KB	Output is correct

Subtask #8
5.0 / 5.0

#	결과	실행 시간	메모리	Grader output
1	Correct	25 ms	1492 KB	Output is correct
2	Correct	21 ms	1364 KB	Output is correct
3	Correct	24 ms	1492 KB	Output is correct
4	Correct	26 ms	2772 KB	Output is correct
5	Correct	30 ms	3084 KB	Output is correct

Subtask #9
5.0 / 5.0

#	결과	실행 시간	메모리	Grader output
1	Correct	19 ms	1620 KB	Output is correct
2	Correct	20 ms	1620 KB	Output is correct
3	Correct	21 ms	2536 KB	Output is correct
4	Correct	35 ms	3800 KB	Output is correct
5	Correct	25 ms	2644 KB	Output is correct

Subtask #10
5.0 / 5.0

#	결과	실행 시간	메모리	Grader output
1	Correct	30 ms	1876 KB	Output is correct
2	Correct	24 ms	1876 KB	Output is correct
3	Correct	24 ms	2908 KB	Output is correct
4	Correct	36 ms	3808 KB	Output is correct
5	Correct	30 ms	3032 KB	Output is correct

Subtask #11
5.0 / 5.0

#	결과	실행 시간	메모리	Grader output
1	Correct	24 ms	1876 KB	Output is correct
2	Correct	24 ms	1876 KB	Output is correct
3	Correct	24 ms	2908 KB	Output is correct
4	Correct	40 ms	3788 KB	Output is correct
5	Correct	33 ms	3156 KB	Output is correct

Subtask #12
5.0 / 5.0

#	결과	실행 시간	메모리	Grader output
1	Correct	107 ms	8148 KB	Output is correct
2	Correct	126 ms	8076 KB	Output is correct
3	Correct	124 ms	15304 KB	Output is correct
4	Correct	209 ms	17608 KB	Output is correct
5	Correct	150 ms	14928 KB	Output is correct

Subtask #13
5.0 / 5.0

#	결과	실행 시간	메모리	Grader output
1	Correct	126 ms	8148 KB	Output is correct
2	Correct	215 ms	14664 KB	Output is correct
3	Correct	124 ms	13892 KB	Output is correct
4	Correct	171 ms	17364 KB	Output is correct
5	Correct	153 ms	15428 KB	Output is correct

Subtask #14
5.0 / 5.0

#	결과	실행 시간	메모리	Grader output
1	Correct	125 ms	9684 KB	Output is correct
2	Correct	145 ms	9684 KB	Output is correct
3	Correct	156 ms	18408 KB	Output is correct
4	Correct	215 ms	21480 KB	Output is correct
5	Correct	182 ms	17640 KB	Output is correct

Subtask #15
5.0 / 5.0

#	결과	실행 시간	메모리	Grader output
1	Correct	166 ms	9684 KB	Output is correct
2	Correct	234 ms	17636 KB	Output is correct
3	Correct	145 ms	16484 KB	Output is correct
4	Correct	212 ms	21324 KB	Output is correct
5	Correct	184 ms	18412 KB	Output is correct

Subtask #16
5.0 / 5.0

#	결과	실행 시간	메모리	Grader output
1	Correct	148 ms	11264 KB	Output is correct
2	Correct	175 ms	11220 KB	Output is correct
3	Correct	170 ms	21384 KB	Output is correct
4	Correct	286 ms	24780 KB	Output is correct
5	Correct	217 ms	20200 KB	Output is correct

Subtask #17
5.0 / 5.0

#	결과	실행 시간	메모리	Grader output
1	Correct	172 ms	11220 KB	Output is correct
2	Correct	261 ms	20484 KB	Output is correct
3	Correct	203 ms	19532 KB	Output is correct
4	Correct	240 ms	24596 KB	Output is correct
5	Correct	220 ms	21324 KB	Output is correct

Subtask #18
5.0 / 5.0

#	결과	실행 시간	메모리	Grader output
1	Correct	172 ms	12756 KB	Output is correct
2	Correct	225 ms	12756 KB	Output is correct
3	Correct	196 ms	24360 KB	Output is correct
4	Correct	287 ms	28452 KB	Output is correct
5	Correct	246 ms	23984 KB	Output is correct

Subtask #19
5.0 / 5.0

#	결과	실행 시간	메모리	Grader output
1	Correct	201 ms	12756 KB	Output is correct
2	Correct	316 ms	23324 KB	Output is correct
3	Correct	194 ms	22308 KB	Output is correct
4	Correct	284 ms	28328 KB	Output is correct
5	Correct	250 ms	24380 KB	Output is correct

Subtask #20
5.0 / 5.0

#	결과	실행 시간	메모리	Grader output
1	Correct	210 ms	15956 KB	Output is correct
2	Correct	280 ms	15956 KB	Output is correct
3	Correct	242 ms	30452 KB	Output is correct
4	Correct	367 ms	35164 KB	Output is correct
5	Correct	303 ms	29532 KB	Output is correct

Subtask #21
5.0 / 5.0

#	결과	실행 시간	메모리	Grader output
1	Correct	245 ms	15892 KB	Output is correct
2	Correct	362 ms	29276 KB	Output is correct
3	Correct	243 ms	28252 KB	Output is correct
4	Correct	352 ms	35300 KB	Output is correct
5	Correct	310 ms	30684 KB	Output is correct

답안 #781094

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